This game is like the classic side scroll games of the 80s. You use the direction arrows to move the main character from left to right. If the missle strike you health will decrease. It also has some elements of a strategy game. This lite version contains the first level and some of the second level. If you have a device that play typical high quality games, this will run fine on your device. If you have a device that is not designed for advanced games please try this game with a good device like any smartphone. 100 dollar E-book readers are not tablets and will not run games often. Real tablets and cell phones that retail at 400 dollars or more will load this game correctly.